Measurement-computing USB-1602HS-2AO Bedienungsanleitung PDF herunterladen (Seite 40)

USB-1602HS-2AO User's Guide Specifications

Analog input calibration

Table 8. Analog input calibration specifications

Parameter

Specification

Recommended warm-up time

15 minutes minimum

Calibration methods

Software system calibration and self-calibration

Self-calibration

yes

System calibration interval

1 year

System calibration references

+8.192 V, +2.048 V, +0.4096 V ±5 mV.

Actual measured values stored in EEPROM

Tempco: 5 ppm/°C maximum

Long term stability: 30 ppm/1000 h

Digital inputs

Table 9. Digital input specifications

Parameter

Specification

Number

16 inputs (DIN0-DIN15)

Digital type

3.3V CMOS (5V tolerant)

Digital input transfer rate (H/W-paced)

Up to 8 MHz — DIO-only operation

2 MHz — if configured for AI operations

Input high voltage

2.0 V minimum, 5.5 V maximum

Input low voltage

0.8 V maximum, 0 V minimum

Absolute maximum input voltage

15 V (power-on and power-off conditions)

DIN pacing

On-board or external clock (XAPCR)

Pacer sources

 Internal pacer clock or external digital source (XAPCR or EXT CLK BNC).

 External pacer clock (XAPCR or EXT CLK BNC)

See Table 12 for additional information.

DIN trigger modes and sources

See Table 11

Input pull-ups

100 kΩ (consult factory for alternative options)

Latency, software paced

115 ms, typical (system dependant)

Digital outputs

Table 10. Digital output specifications

Parameter

Specification

Number

16 outputs (DOUT0-DOUT15)

Digital output rate

8 MHz maximum if no analog outputs are enabled, (1 MHz maximum if analog

outputs are enabled)

Digital type

3.3 V CMOS

Output high voltage (IOH = –2.5 mA)

2.4 V minimum, 3.4 V maximum

Output low voltage (IOL = 2.5 mA)

0.4 V maximum, 0 V minimum

Output current

2.5 mA maximum per pin

DOUT pacing

On-board or external clock (XDPCR)

Pacer sources

 Internal pacing

 External pacing

 Pacing slaved to analog input pacing

See table 12 for additional information.

Outputs at power on and reset

Low

Latency, software paced

115 ms, typical (system dependant)

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